MESON Chess Problem Database

Problem Display
PID: 102991 (N1B5/P5p1/Qpk3Pp/5N1K/1rp1P3/2p5/2P3p1/6B1 w - - 0 1)

Hermanson, Halvar

5th HM., El Ajedrez Espanol, 1956-1957

N1B5/P5p1/Qpk3Pp/5N1K/1rp1P3/2p5/2P3p1/6B1

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qxc4#
    • 1...Rb2
      • 2.Qxc4#
    • 1...Rb3
      • 2.Qxc4#
    • 1...Ra4
      • 2.Qxb6#
    • 1...Rb5
      • 2.Qb7#
  • Tries
    • 1.Kg4?
      • 1...Rb1
        • 2.Qxc4#
      • 1...Rb2
        • 2.Qxc4#
      • 1...Rb3
        • 2.Qxc4#
      • 1...Ra4
        • 2.Qxb6#
      • 1...Rb5
        • 2.Qb7#
      • 1...h5+!
    • 1.Kh4?
      • 1...Rb1
        • 2.Qxc4#
      • 1...Rb2
        • 2.Qxc4#
      • 1...Rb3
        • 2.Qxc4#
      • 1...Ra4
        • 2.Qxb6#
      • 1...Rb5
        • 2.Qb7#
      • 1...h5!
  • Keys
    • 1.Qa3!
      • 1...Kb5
        • 2.Bd7#
      • 1...Rb1
        • 2.Sd4#
      • 1...Rb2
        • 2.Sd4#
      • 1...Rb3
        • 2.Sd4#
      • 1...Ra4
        • 2.Sd4#
      • 1...Rb5
        • 2.Qd6#
      • 1...b5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR2(F),XP(d)
    • R(c);N_GUARD::QAR1(F),XP(e)
    • R(c);P_PINS(D),SBLOCK::QAB1(F)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • R(c);N_GUARD::QAR2(F),XP(d)
        • R(c);N_GUARD::QAR1(F),XP(e)
        • R(c);SBLOCK::QAB1(F)
      • Refutation
        • P(g);CHECK
    • Try
      • K(E);P-FLIGHT
      • Vars
        • R(c);N_GUARD::QAR2(F),XP(d)
        • R(c);N_GUARD::QAR1(F),XP(e)
        • R(c);SBLOCK::QAB1(F)
      • Refutation
        • P(g);
  • Actual
    • Q(F);N_PINP(e)
    • Vars
      • K(f);S_FLIGHT::B(J)
      • R(c);::S(D)
      • R(c);OGATE,P_PINS(D),SBLOCK::QAR1(F)
      • P(e);OGATEB::QAR2(F)
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